Place your mung beans into a bowl. Pick out the bad mung beans. Rinse the beans well. Cover the beans with water and a lid and soak them overnight.
Next day, drain out the water in a colander. Rinse the beans once with clean water.
Cover the rinsed beans with a lid and place it in an oven. You don’t need to turn the oven or even the light on. Keep them in the oven overnight.
The next day, you will see that your sprouts will have grown considerably when you check them in the morning. You can harvest them now, or keep them for another day in the oven with a lid undisturbed. Rinse them before use. Place the sprouts in a bowl with water. Some of the hulls will float, you can discard those.
Use mung bean sprouts in salads, vegetables, or soups. Store them in the refrigerator for up-to a week.